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Chapter 1 - Introduction. Types - programs, software translation process - abstract to detail, primitive, machine language - satisfy a need system software - operating system application programs utility programs data vs. information vs. knowledge. Application programs

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Chapter 1 introduction
Chapter 1 - Introduction

  • Types - programs, software

    • translation process - abstract to detail, primitive, machine language - satisfy a need

    • system software - operating system

    • application programs

    • utility programs

    • data vs. information vs. knowledge


  • Application programs

    • programmer, analyst, systems analyst

    • read, process, produce information

    • information system

    • packaged/customized software

      • outsource or in-house

      • horizontal market

      • vertical market

      • VAR - value added reseller

      • interactive vs. batch

    • machine language

    • symbolic programs


  • VB - Visual Basic - GUI environment

    • event driven

    • forms, controls

    • procedural vs. object-oriented language

    • user controls

    • object model

      • objects - noun

      • properties - adjectives

      • methods - verbs


    • Writing projects

      • 3 step process

        • Planning - design interface

        • set the properties

        • write the code

      • projects - files

        • .VBP - project file

        • .FRM - form file - objects and properties

        • .BAS - standard code modules

        • .OCX - custom controls

        • .VBW file - each of forms

    • Environment

      • Windows


    • Modes

      • design time - design and code

      • run time - test and run

      • break time - pause and run time error

  • Writing project

    • plan

    • define user interface

      • form - twips

    • set properties

    • write code - event procedure - user controls

    • coding statements

      • REM - comments

      • assignment statements


  • run project

  • save form and project - separate folder

  • print

  • Finding and fixing errors

    • compile errors - syntax

    • run-time errors - cannot execute

    • Logic errors - incorrect output

  • Naming rules and conventions

    • consistent - begin with a letter, up to 40 characters, letters, digits, underscore, no spaces or punctuation

    • naming conventions


  • Assignment 1 read chapter 1 pg 46 review questions 1 15 pg 47 1 2 design only
    Assignment #1read chapter 1, pg. 46 – Review Questions 1-15; pg. 47 - #1.2 - design only


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